Association Between Age-Related Macular Degeneration and Risk of Heart Failure: A Population-Based Nested Case-Control Study

Background Heart failure (HF) is a major health problem worldwide because of its high morbidity and mortality. Recently, the role of the microvasculature in HF has gained more attention. Age-related macular degeneration (AMD) is manifested through geographic atrophy or the development of neovascularization. However, there are limited data on investigations about the association between AMD and HF. The purpose of this study was to examine the association of AMD with the risk of HF in a large population-based cohort of men and women. Methods and Results A nested case-control study using Taiwan's National Health Insurance Research Database was conducted between 2000 and 2012. Newly diagnosed heart failure cases (n=13 721) and matched controls (n=54 884) in the database were recruited. Patients who had >= 2 clinical visits with a diagnosis of AMD at least 1 year before the diagnosis of HF were identified as patients with AMD. Conditional logistic regressions were performed to calculate odds ratios and 95% CIs to assess the association between AMD and risk of HF. AMD was associated with a 1.58-fold increased risk of HF (95% CI, 1.16-1.87) (P<0.001) after adjustment for potential confounders. This significant association was evident in both nonexudative and exudative AMD subgroups. Conclusions Our study provides evidence that AMD was associated with an increased risk of HF. Further molecular and pathophysiological studies are needed to clarify the underlying pathophysiological mechanisms behind the association of AMD with HF.